CN206657058U - A kind of Transformer Short Circuit Impedance on-line detecting system - Google Patents
A kind of Transformer Short Circuit Impedance on-line detecting system Download PDFInfo
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- CN206657058U CN206657058U CN201720378485.7U CN201720378485U CN206657058U CN 206657058 U CN206657058 U CN 206657058U CN 201720378485 U CN201720378485 U CN 201720378485U CN 206657058 U CN206657058 U CN 206657058U
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Abstract
It the utility model is related to a kind of Transformer Short Circuit Impedance on-line detecting system, including electrical signal collection terminal, electric signal relay and intelligent terminal；Described electrical signal collection terminal includes voltage transformer, voltage detection module, Hall current detection module and communication module；One end ground connection of the primary side winding of described voltage transformer, the other end connect the tapping cable of transformer；The vice-side winding connection voltage detection module of described voltage transformer；Described Hall current detection module is around tapping cable；Described voltage detection module and Hall current detection module is connected with communication module；Described communication module transmits data to electric signal relay；Described electric signal relay is connected with intelligent terminal carries out data interaction；The short-circuit impedance of transformer can be monitored in real time, and timely early warning is carried out to the failure of transformer according to real-time detection, is easy to attendant to be safeguarded.
Description
Technical field
Electrical engineering field is the utility model is related to, more particularly to a kind of Transformer Short Circuit Impedance on-line detecting system.
Background technology
At present, deformation of transformer winding is detected by frequency response method or short circuit impedance method；Frequency response method will
Stable sine sweep signal puts on one end of tested Transformer Winding, while records the voltage on the terminal and other terminals
Amplitude and phase, so as to obtain being tested one group of Frequency Response of winding, because test result is by the shadow of many uncertain factors
Ring, its diagnostic result still has certain unstability；Need to employ heavy testing equipment and Large Copacity using short circuit impedance method
Experiment power supply, test period is longer, False Rate is higher.Meanwhile existing technology, installation complexity is needed in test process
Test equipment, real-time online detection can not be carried out to transformer.
The content of the invention
The utility model provides a kind of Transformer Short Circuit Impedance on-line checking system that real-time online detection is carried out to transformer
System.
In order to solve the above technical problems, the technical solution adopted in the utility model is：
A kind of Transformer Short Circuit Impedance on-line detecting system, including electrical signal collection terminal, electric signal relay and intelligence
Can terminal；Described electrical signal collection terminal includes voltage transformer, voltage detection module, Hall current detection module and communication
Module；One end ground connection of the primary side winding of described voltage transformer, the other end connect the tapping cable of transformer；Described electricity
Press the vice-side winding connection voltage detection module of transformer；Described Hall current detection module is around tapping cable；Described
Voltage detection module and Hall current detection module are connected with communication module；Described communication module is to electric signal relay
Transmit data；Described electric signal relay is connected with intelligent terminal carries out data interaction.
In such scheme, voltage transformer is converted to the high voltage on the tapping cable of transformer can be with safety detection
Low-voltage, be connected with voltage transformer voltage detection module detection voltage transformer output voltage magnitude and phase, lead to
Cross computing and draw voltage magnitude on respective taps cable；Hall current detection module detects tapping cable around tapping cable
In current amplitude and phase in corresponding tapping cable；Wherein, voltage detection module and Hall current detection module pass through logical
Letter module carries out data transmission with electric signal relay；Electric signal relay carries out data interaction with intelligent terminal, passes through
The amplitude and phase of the voltage of transformer, electric current can be observed in intelligent terminal, voltage, the amplitude of electric current and phase is carried out corresponding
Computing can obtain the short-circuit impedance value of transformer；The short circuit that transformer can be monitored in real time by electrical signal collection terminal hinders
It is anti-, timely early warning is carried out to the failure of transformer according to real-time detection, is easy to attendant to be safeguarded.
Preferably, described electrical signal collection terminal also includes power transfer module, described power transfer module it is defeated
Enter end and the secondary winding of voltage transformer connects；Described voltage detection module, Hall current detection module and communication module
It is connected with power transfer module；Power transfer module is that voltage detection module, Hall current detection module and communication module supply
Electricity.
Preferably, described communication module include WiFi units, ZigBee units, GSM units, Ethernet interface unit,
One or more in RS323 interface units or RS485 interface units.
Preferably, described communication module transmits data by way of wirelessly or non-wirelessly to electric signal relay.
Preferably, described electrical signal collection terminal have nine primary side windings for being respectively acting on transformer and secondary around
Group.
Preferably, described intelligent terminal is host computer or smart machine.
Compared with prior art, the beneficial effects of the utility model are：Being converted into high voltage using voltage transformer can
The low-voltage of safety detection, meanwhile, using voltage detection module and Hall current detection module respectively to the width of voltage and current
Value is detected, and the data of detection are transmitted to electric signal relay, electric signal relay and intelligence by communication module
Terminal carries out data interaction, the voltage of transformer, the amplitude of electric current and phase can be observed by intelligent terminal, to voltage, electricity
The amplitude and phase of stream carry out the short-circuit impedance value that corresponding computing can obtain transformer；The short circuit of transformer can be monitored in real time
Impedance, timely early warning is carried out to the failure of transformer according to real-time detection, is easy to attendant to be safeguarded.
Brief description of the drawings
Fig. 1 is the structural representation of the utility model Transformer Short Circuit Impedance on-line detecting system.
Fig. 2 is the structured flowchart of the electrical signal collection terminal of the utility model Transformer Short Circuit Impedance on-line detecting system.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out
To remove, be fully described by, it is clear that described embodiment is only the utility model part of the embodiment, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment obtained, belong to the scope of the utility model protection.
A kind of Transformer Short Circuit Impedance on-line detecting system, wherein, the structural representation of the system is as shown in Figure 1：Including
Electrical signal collection terminal 1, electric signal relay 2 and intelligent terminal 3；Wherein 4 be transformer, described electrical signal collection terminal
1 is arranged on the tapping cable of transformer 4.
In the present embodiment, transformer 4 includes a primary side winding and two vice-side windings, wherein, primary side winding and
Two vice-side windings include three tapping cables；Electrical signal collection terminal 1 is mounted on each tapping cable；Telecommunications
Number acquisition terminal 1 by the data information transfer collected to electric signal relay 2, wherein, electric signal relay 2 and intelligence
Terminal 3 carries out data interaction.
In the present embodiment, the structured flowchart of the electrical signal collection terminal of Transformer Short Circuit Impedance on-line detecting system is as schemed
Shown in 2：
Electrical signal collection terminal includes voltage transformer 5, voltage detection module 6, Hall current detection module 7, communication mould
Block 8 and power transfer module 9；Wherein, one end ground connection of the primary side winding of voltage transformer 5, other end connection transformer 4 are taken out
Head cable, voltage transformer 5 by the high voltage of transformer 4 dress change into can safety detection low-voltage；Meanwhile voltage transformer 5
Vice-side winding connection voltage detection module 6, voltage detection module 6 detects to the voltage of voltage transformer 5, voltage detecting
Module 6 detects voltage magnitude and the phase that voltage transformer 5 exports, and the voltage amplitude on respective taps cable is drawn by computing
Value；
Wherein, Hall current detection module 7 detects the electricity in corresponding tapping cable in tapping cable around tapping cable
Flow amplitude and phase；Voltage detection module 6 and Hall current detection module 7 are entered by communication module 8 and electric signal relay
Row data transfer；Wherein, the secondary winding connection of the input of power transfer module 9 and voltage transformer 5 obtains power supply energy；
Meanwhile the power supply energy of acquisition is voltage detection module 6, Hall current detection module 7 and communication module 8 by power transfer module
Power supply.
In the present embodiment, communication module 8 is carried out data transmission using WiFi units；Intelligent terminal 3 uses host computer；Electricity
The power supply energy of acquisition is that voltage detection module 6, Hall current detection module 7 and communication module 8 are powered by source modular converter 9；
Voltage transformer 5 by the high voltage on the tapping cable of transformer 4 be converted to can with the low-voltage of safety detection, with
The voltage magnitude and phase that the voltage detection module detection voltage transformer 5 that voltage transformer 5 connects exports, are drawn by computing
Voltage magnitude on respective taps cable；Hall current detection module 7 is detected and taken out accordingly in tapping cable around tapping cable
Current amplitude and phase in head cable；Wherein, voltage detection module 6 and Hall current detection module 7 by WiFi units with
Electric signal relay 2 carries out data transmission；Electric signal relay 2 carries out data interaction with host computer, can by host computer
It was observed that the amplitude and phase of the voltage of transformer 4, electric current；According to all sampled values in a period of time, in combination with heredity
Algorithm calculates the short-circuit impedance value of transformer 4；The short-circuit impedance of transformer 4 can be monitored in real time, according to real-time detection pair
The failure of transformer 4 carries out timely early warning, is easy to attendant to be safeguarded.
Obviously, above-described embodiment of the present utility model is only intended to clearly illustrate example of the present invention, and is not
It is the restriction to embodiments of the present invention.For those of ordinary skill in the field, on the basis of the above description
It can also make other changes in different forms.There is no necessity and possibility to exhaust all the enbodiments.It is all
All any modification, equivalent and improvement made within the spirit and principles in the present invention etc., it should be included in right of the present invention
It is required that protection domain within.
Claims (7)
- A kind of 1. Transformer Short Circuit Impedance on-line detecting system, it is characterised in that：Including electrical signal collection terminal, electric signal relay and intelligent terminal；Described electrical signal collection terminal includes voltage Transformer, voltage detection module, Hall current detection module and communication module；The one of the primary side winding of described voltage transformer End ground connection, the other end connect the tapping cable of transformer；The vice-side winding connection voltage detection module of described voltage transformer； Described Hall current detection module is around tapping cable；Described voltage detection module and Hall current detection module are with leading to Believe module connection；Described communication module transmits data to electric signal relay；Described electric signal relay and intelligence Terminal connection carries out data interaction.
- 2. Transformer Short Circuit Impedance on-line detecting system according to claim 1, it is characterised in that：Described electric signal is adopted Collection terminal also includes power transfer module, and the input of described power transfer module and the secondary winding of voltage transformer connect Connect.
- 3. Transformer Short Circuit Impedance on-line detecting system according to claim 1, it is characterised in that：Described voltage detecting Module, Hall current detection module and communication module are connected with power transfer module.
- 4. Transformer Short Circuit Impedance on-line detecting system according to claim 1, it is characterised in that：Described communication module Including in WiFi units, ZigBee units, GSM units, Ethernet interface unit, RS323 interface units or RS485 interface units One or more.
- 5. the Transformer Short Circuit Impedance on-line detecting system according to any one of Claims 1 to 4, it is characterised in that：It is described Communication module by way of wirelessly or non-wirelessly to electric signal relay transmit data.
- 6. Transformer Short Circuit Impedance on-line detecting system according to claim 1, it is characterised in that：Described electric signal is adopted Collection terminal has nine.
- 7. Transformer Short Circuit Impedance on-line detecting system according to claim 1, it is characterised in that：Described intelligent terminal For host computer or smart machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720378485.7U CN206657058U (en) | 2017-04-11 | 2017-04-11 | A kind of Transformer Short Circuit Impedance on-line detecting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720378485.7U CN206657058U (en) | 2017-04-11 | 2017-04-11 | A kind of Transformer Short Circuit Impedance on-line detecting system |
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| CN206657058U true CN206657058U (en) | 2017-11-21 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108075469A (en) * | 2017-12-20 | 2018-05-25 | 国网江西省电力有限公司电力科学研究院 | A kind of distribution transformer zero sequence impedance computational methods |
| CN110456160A (en) * | 2019-08-20 | 2019-11-15 | 保定市森茂科技有限公司 | Super-pressure three-phase transformer D.C. resistance test method and test device |
| CN111766449A (en) * | 2020-06-18 | 2020-10-13 | 浙江嘉宏电力科技有限公司 | Short circuit impedance detection system and detection method |
-
2017
- 2017-04-11 CN CN201720378485.7U patent/CN206657058U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108075469A (en) * | 2017-12-20 | 2018-05-25 | 国网江西省电力有限公司电力科学研究院 | A kind of distribution transformer zero sequence impedance computational methods |
| CN108075469B (en) * | 2017-12-20 | 2021-07-02 | 国网江西省电力有限公司电力科学研究院 | Zero sequence impedance calculation method for distribution transformer |
| CN110456160A (en) * | 2019-08-20 | 2019-11-15 | 保定市森茂科技有限公司 | Super-pressure three-phase transformer D.C. resistance test method and test device |
| CN110456160B (en) * | 2019-08-20 | 2021-11-30 | 保定市森茂科技有限公司 | Method and device for testing direct current resistance of ultrahigh voltage three-phase transformer |
| CN111766449A (en) * | 2020-06-18 | 2020-10-13 | 浙江嘉宏电力科技有限公司 | Short circuit impedance detection system and detection method |
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